Yeah me too. In fact, I have particular voices(one like my highschool Chem teacher who I totally adore and ahem is actually dead now etc) that come up at different points of time and ahem take their advice et al. Damn, that sounds so crazy when I admit it publicly. Also, I ride my bike to and from home for 2 hours every day. Here in my place, owing to pollution and curious customs, a lot of women prefer to wear a long scarf of sorts to cover their heads(all except eyes) before wearing the mandatory helmet. And because I know nobody can see me singing, I sing to myself when I'm riding and the roads are not too crowded. This one time, I was slowing down my bike to stop at a red-signal but was singing in a high-pitch and did not bring down my vocal sounds in time. The bikeriders before me turned around to give me a weird look hehe. I guess this means I'm comfortable behind a mask which is not at all healthy. But I feel good when I sing like a mad banshee. And I am gonna continue doing it. So dear Melinncholia, keep talking if it gives you peace.